His property near the town - which is located about 539 kilometres south-west of Sydney and about 80km west of Wagga - reportedly became the seat of power in Australia when Fischer was acting prime minister.

It's a small, close-knit community of about 271 - which includes the surrounds - one that will be sure to feel the devastation of losing four of their own.

The property where a woman - believed to be aged in her 40s - and three young children - aged 10 and under - were found dead sits almost halfway between Boree Creek and nearby Lockhart.

At this time of the year, the countryside looks picture perfect; a picture that was tainted uncomprehendingly today.

Four lives ended.

How? A police investigation throughout the night will go some way to determine what unfolded inside a house on the property on Tuesday.

10.25pm: Police have issued a description of the man they are now looking for after the grim discovery at Boree Creek.

Wagga LAC commander Supt Bob Noble has told The Daily Advertiser that investigations will continue through the night.

A man who is "normally an occupant of that premises" was not found at the property, and police are now trying to find him.

"We're all saddened by it, of course ... I know the family, they're a well-respected farming family and it's just so devastating.

"I just can't believe it ... especially when there's children involved, they had their whole lives ahead of them."

Police are yet to release the names of the deceased, and that of the remaining family member who is still unaccounted for.

7.32pm: Forensic services have arrived at the property, where investigations by specialist police are set to continue overnight.

Advertiser journalist Andrew Pearson filed this report a short time ago.

7.30pm: NSW police have issued a statement, revealing a little more about the victims.

"About 3pm, police went to the property on the Lockhart/Boree Creek Road in Lockhart where they found the bodies inside a house," it read.

"While they have not yet been formally identified, they are believed to be a woman, aged in her 40s, two girls and a boy, aged 10 and under."

7pm:Daily Advertiser journalist Andrew Pearson is at the scene, where, he reports, police are setting in for the night.

"Both entry points to the property are being manned by police and an SES unit from The Rock has just arrived to light the scene," he said.

"Supt Noble said police are concerned for the welfare of a male also missing from the property. No further information is available at this time."

6.45pm: Volunteers from The Rock's State Emergency Service have arrived at the property to assist investigators with lighting at the scene.

6.15pm: A woman and three children have been found dead in a Riverina farmhouse, and police hold grave concerns for a man missing from the property.

Paramedics and police from Wagga and neighbouring local area commands responded to calls around 3pm, with at least half-a-dozen police vehicles rushing to a property south of Boree Creek, 80 kilometres west of Wagga.

Commander of Wagga LAC, Superintendent Bob Noble, confirmed that the bodies of four people were found at the home.

"There are a number of deceased people in a farmhouse on the property," Supt Noble told The Daily Advertiser.

Supt Noble confirmed the bodies are those of a woman and three children, who are understood to have suffered gunshot wounds.

Police are now looking for a man, believed to be the male occupant of the property, who is yet to be accounted for.

A large police contingent has been at the scene for several hours, however Supt Noble could not reveal further circumstances surrounding the deaths.